1201199966 has 16 divisors (see below), whose sum is σ = 1863375360. Its totient is φ = 580146840.

The previous prime is 1201199963. The next prime is 1201200029. The reversal of 1201199966 is 6699911021.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201199963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16205 + ... + 51623.

It is an arithmetic number, because the mean of its divisors is an integer number (116460960).

Almost surely, 2^1201199966 is an apocalyptic number.

1201199966 is a deficient number, since it is larger than the sum of its proper divisors (662175394).

1201199966 is a wasteful number, since it uses less digits than its factorization.

1201199966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35999.

The product of its (nonzero) digits is 52488, while the sum is 44.

The square root of 1201199966 is about 34658.3318409874. The cubic root of 1201199966 is about 1063.0126606685.

The spelling of 1201199966 in words is "one billion, two hundred one million, one hundred ninety-nine thousand, nine hundred sixty-six".